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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ--- -- Username/password database library. -- -- The usernames and passwords functions return -- multiple values for use with exception handling via -- nmap.new_try. The first value is the Boolean success -- indicator, the second value is the closure. -- -- The closures can take an argument of "reset" to rewind the list -- to the beginning. -- -- To avoid taking a long time against slow services, the closures will -- stop returning values (start returning nil) after a -- certain time. The time depends on the timing template level, and is -- * -T3 or less: 10 minutes -- * -T4: 5 minutes -- * -T5: 3 minutes -- Time limits are increased by 50% if a custom username or password -- database is used with the userdb or passdb -- script arguments. You can control the time limit directly with the -- unpwdb.timelimit script argument. Use -- unpwdb.timelimit=0 to disable the time limit. -- -- You can select your own username and/or password database to read from with -- the script arguments userdb and passdb, -- respectively. Comments are allowed in these files, prefixed with -- "#!comment:". Comments cannot be on the same line as a -- username or password because this leaves too much ambiguity, e.g. does the -- password in "mypass #!comment: blah" contain a space, two -- spaces, or do they just separate the password from the comment? -- -- @usage -- require("unpwdb") -- -- local usernames, passwords -- local try = nmap.new_try() -- -- usernames = try(unpwdb.usernames()) -- passwords = try(unpwdb.passwords()) -- -- for password in passwords do -- for username in usernames do -- -- Do something with username and password. -- end -- usernames("reset") -- end -- -- @usage -- nmap --script-args userdb=/tmp/user.lst -- nmap --script-args unpwdb.timelimit=10m -- -- @args userdb The filename of an alternate username database. Default: nselib/data/usernames.lst -- @args passdb The filename of an alternate password database. Default: nselib/data/passwords.lst -- @args unpwdb.userlimit The maximum number of usernames -- usernames will return (default unlimited). -- @args unpwdb.passlimit The maximum number of passwords -- passwords will return (default unlimited). -- @args unpwdb.timelimit The maximum amount of time that any iterator will run -- before stopping. The value is in seconds by default and you can follow it -- with ms, s, m, or h for -- milliseconds, seconds, minutes, or hours. For example, -- unpwdb.timelimit=30m or unpwdb.timelimit=.5h for -- 30 minutes. The default depends on the timing template level (see the module -- description). Use the value 0 to disable the time limit. -- @author Kris Katterjohn 06/2008 -- @copyright Same as Nmap--See https://nmap.org/book/man-legal.html local io = require "io" local nmap = require "nmap" local os = require "os" local stdnse = require "stdnse" local datetime = require "datetime" _ENV = stdnse.module("unpwdb", stdnse.seeall) local usertable = {} local passtable = {} local customdata = false -- So I don't have to type as much :) local args = nmap.registry.args local userfile = function() if args.userdb then customdata = true return args.userdb end return nmap.fetchfile("nselib/data/usernames.lst") end local passfile = function() if args.passdb then customdata = true return args.passdb end return nmap.fetchfile("nselib/data/passwords.lst") end local filltable = function(filename, table) if #table ~= 0 then return true end local file, err = io.open(filename, "r") if not file then return false, err end for l in file:lines() do -- Comments takes up a whole line if not l:match("#!comment:") then table[#table + 1] = l end end file:close() return true end table_iterator = function(table) local i = 1 return function(cmd) if cmd == "reset" then i = 1 return end local elem = table[i] if elem then i = i + 1 end return elem end end --- Returns the suggested number of seconds to attempt a brute force attack -- -- Based on the unpwdb.timelimit script argument, Nmap's timing -- values (-T4 etc.) and whether or not a user-defined list is -- used. -- -- You can use the script argument notimelimit to make this -- function return nil, which means the brute-force should run -- until the list is empty. If notimelimit is not used, be sure to -- still check for nil return values on the above two functions in -- case you finish before the time limit is up. timelimit = function() -- If we're reading from a user-defined username or password list, -- we'll give them a timeout 1.5x the default. If the "notimelimit" -- script argument is used, we return nil. -- Easy enough if args.notimelimit then return nil end if args["unpwdb.timelimit"] then local limit, err = stdnse.parse_timespec(args["unpwdb.timelimit"]) if not limit then error(err) end return limit end local t = nmap.timing_level() if t <= 3 then return (customdata and 900) or 600 elseif t == 4 then return (customdata and 450) or 300 elseif t == 5 then return (customdata and 270) or 180 end end --- Returns a function closure which returns a new username with every call -- until the username list is exhausted (in which case it returns -- nil). -- @return boolean Status. -- @return function The usernames iterator. local usernames_raw = function() local path = userfile() if not path then return false, "Cannot find username list" end local status, err = filltable(path, usertable) if not status then return false, ("Error parsing username list: %s"):format(err) end return true, table_iterator(usertable) end --- Returns a function closure which returns a new password with every call -- until the password list is exhausted (in which case it returns -- nil). -- @return boolean Status. -- @return function The passwords iterator. local passwords_raw = function() local path = passfile() if not path then return false, "Cannot find password list" end local status, err = filltable(path, passtable) if not status then return false, ("Error parsing password list: %s"):format(err) end return true, table_iterator(passtable) end --- Wraps time and count limits around an iterator. -- -- When either limit expires, starts returning nil. Calling the -- iterator with an argument of "reset" resets the count. -- @param time_limit Time limit in seconds. Use 0 or nil for no limit. -- @param count_limit Count limit in seconds. Use 0 or nil for no limit. -- @param label A string describing the iterator, to be used in verbose print messages. -- @return boolean Status. -- @return function The wrapped iterator. limited_iterator = function(iterator, time_limit, count_limit, label) time_limit = (time_limit and time_limit > 0) and time_limit count_limit = (count_limit and count_limit > 0) and count_limit local start = os.time() local count = 0 label = label or "limited_iterator" return function(cmd) if cmd == "reset" then count = 0 else count = count + 1 end if count_limit and count > count_limit then stdnse.verbose1("%s: Count limit %d exceeded.", label, count_limit) return end if time_limit and os.time() - start >= time_limit then stdnse.verbose1("%s: Time limit %s exceeded.", label, datetime.format_time(time_limit)) return end return iterator(cmd) end end --- Returns a function closure which returns a new password with every call -- until the username list is exhausted or either limit expires (in which cases -- it returns nil). -- @param time_limit Time limit in seconds. Use 0 for no limit. -- @param count_limit Count limit in seconds. Use 0 for no limit. -- @return boolean Status. -- @return function The usernames iterator. usernames = function(time_limit, count_limit) local status, iterator status, iterator = usernames_raw() if not status then return false, iterator end time_limit = time_limit or timelimit() if not count_limit and args["unpwdb.userlimit"] then count_limit = tonumber(args["unpwdb.userlimit"]) end return true, limited_iterator(iterator, time_limit, count_limit, "usernames") end --- Returns a function closure which returns a new password with every call -- until the password list is exhausted or either limit expires (in which cases -- it returns nil). -- @param time_limit Time limit in seconds. Use 0 for no limit. -- @param count_limit Count limit in seconds. Use 0 for no limit. -- @return boolean Status. -- @return function The passwords iterator. passwords = function(time_limit, count_limit) local status, iterator status, iterator = passwords_raw() if not status then return false, iterator end time_limit = time_limit or timelimit() if not count_limit and args["unpwdb.passlimit"] then count_limit = tonumber(args["unpwdb.passlimit"]) end return true, limited_iterator(iterator, time_limit, count_limit, "passwords") end --- Returns a new iterator that iterates through its consecutive iterators, -- basically concatenating them. -- @param iter1 First iterator to concatenate. -- @param iter2 Second iterator to concatenate. -- @return function The concatenated iterators. function concat_iterators (iter1, iter2) local function helper (next_iterator, command, first, ...) if first ~= nil then return first, ... elseif next_iterator ~= nil then return helper(nil, command, next_iterator(command)) end end local function iterator (command) if command == "reset" then iter1 "reset" iter2 "reset" else return helper(iter2, command, iter1(command)) end end return iterator end --- Returns a new iterator that filters its results based on the filter. -- @param iterator Iterator that needs to be filtered -- @param filter Function that returns bool, which serves as a filter -- @return function The filtered iterator. function filter_iterator (iterator, filter) return function (command) if command == "reset" then iterator "reset" else local val = iterator(command) while val and not filter(val) do val = iterator(command) end return val end end end return _ENV;